About Certvo
Certvo is an accessibility scanner that returns the code, not just the complaint. It checks a site against WCAG 2.1 and 2.2 Level AA, maps every finding to the success criterion and the law that references it, and generates a fix you can paste into the component that caused it.
Why it exists
Accessibility tooling has a reporting problem, not a detection problem. Most scanners hand back a list of violations that is technically correct and practically useless: the team reading it still has to work out which component produced the issue, what the correct markup is, and whether the fix regressed something else. The gap between “here is your problem” and “here is your fix” is where remediation budgets disappear.
The European Accessibility Act made that gap expensive. Since 28 June 2025, consumer-facing digital services in the EU have to meet EN 301 549, which points at WCAG 2.1 AA. In the US, the ADA and Section 508 point at the same standard. Teams now need evidence, not intentions.
How the scanner works
- Real browser rendering. Pages are loaded in headless Chromium via Playwright, so client-rendered content, custom widgets and post-hydration DOM are all evaluated as a user would receive them — not as raw HTML.
- axe-core rule engine. Detection runs on axe-core, the same open-source engine used inside Chrome DevTools, Microsoft Accessibility Insights and Deque's own tooling. Using a published engine means our findings can be independently reproduced.
- Criterion mapping. Each violation is tied to its WCAG success criterion and to the EAA, ADA and Section 508 obligations that reference it, so a finding can be quoted directly into an audit or a procurement questionnaire.
- Fix generation. The offending element, its computed styles and its surrounding markup are passed to a language model with the criterion's requirements, producing a patch against your actual code rather than a generic snippet.
- Re-scanning. Scheduled scans compare against the previous run so a theme update or a new landing page cannot quietly reintroduce a fixed issue.
What we do not claim
Automated testing covers roughly 30–40% of WCAG success criteria. Contrast ratios, missing alternative text, unlabelled controls and invalid ARIA are machine-decidable. Whether alt text is meaningful, whether focus order matches the visual layout, whether an error message actually helps — these need a person. We say so on the scanner page as well, because a tool that implies full coverage sets its users up for a complaint they thought they had prevented.
We also do not sell an accessibility overlay. Overlays patch the DOM at runtime, cannot fix the underlying markup, and have been named in a growing share of US accessibility lawsuits. Certvo changes nothing on your site; it tells you what to change in your source.
Who builds it
Certvo is built and operated by Türkol Yazılım (TÜRKOL YAZILIM BİLGİSAYAR SANAYİ VE TİCARET LİMİTED ŞİRKETİ), a software company registered in Türkiye, tax number 8800579984, at İstiklal Mahallesi, Ganos Sk. No: 5B, Şarköy, Tekirdağ. The engineering team writes the WCAG guidance published across this site; where an article states a legal position it cites the directive, statute or standard it comes from.
Certvo is a software vendor, not a law firm. Nothing on this site is legal advice, and conformance claims about your own product remain yours to make.
Talk to us
Reach the team at info@turkol.com.tr, or see the contact page for support, security disclosure and sales routes. If you found an error in our WCAG guidance, tell us — we correct it and note the change.